The worship of idols or an excessive attachment or devotion to anything.

Thou shalt have no other gods before me, Ex. 20: 3 (Mosiah 12: 35; 13: 12-13). If thou walk after other gods, ye shall surely perish, Deut. 8: 19. Stubbornness is as iniquity and idolatry, 1 Sam. 15: 23. Thou hast discovered thyself to another than me, Isa. 57: 8. Thou hast praised the gods of silver and gold, Dan. 5: 23. Ye cannot serve God and mammon, Matt. 6: 24. Covetousness is idolatry, Col. 3: 5. Children, keep yourselves from idols, 1 Jn. 5: 21. Wo unto those that worship idols, 2 Ne. 9: 37. The idolatry of the people of Nephi brought upon them their wars and destructions, Alma 50: 21. Every man walketh after the image of his own god, D&C 1: 16. Let them labor with their own hands that there be no idolatry, D&C 52: 39. Abraham's father was led away by idolatry, Abr. 1: 27.